Benjamin from North Little Rock, Arkansas writes
Wanted to use this product to kill crabgrass plus other weeds in my Bermuda grass lawn
Q4 Plus Turf Herbicide is a post-emergent herbicide, so it will only be effective on existing plants that are actively growing. You do not want to apply in the fall when fall is transitioning into winter when plants are not activelt growing because they will not be able to absorb the product. The best temperatures to apply in are between 55 degrees and 90 degrees. So now would be a great and safe time to apply.
Answer last updated on: 09/25/2019
